A new Steam
Update (thanks
Shacknews) has a screenshot with a sneak peak of the upcoming Aftermath
episode for Half-Life 2, along with word on plans for the next Counter-Strike
Source update:

The next big Counter-Strike release is set to include two
maps. The first map will be de_port, previously mentioned
here. This
map is set in a resupply port for outgoing ships. The gameplay is designed for a
balanced layout employing a mix of long sightlines with cover and close quarters
fighting environments. The second map will be a completely redone de_inferno, a
historical favorite at CS tournaments and competions. We'll be releasing some
screenshots or other media from both of these maps in the next week or
two.